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CVE-2021-44730

Published: 17 February 2022

snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Priority

High

CVSS 3 base score: 7.8

Status

Package Release Status
snapd
Launchpad, Ubuntu, Debian
bionic
Released (2.54.3+18.04)
focal
Released (2.54.3+20.04)
hirsute Ignored
(reached end-of-life)
impish
Released (2.54.3+21.10.1)
trusty
Released (2.54.3+14.04~esm1)
upstream
Released (2.54.3)
xenial
Released (2.54.3+16.04~esm2)